style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    /* background-image: url(./images/istockphoto-178485863-612x612.jpg);
    */
}
.bg{
    z-index:-10;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}
body{
    background-color: #cdb495;
}
.container{
    width: 400px;
    padding: 25px 35px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    background-color: #252c0d8d;
    border-radius: 10px;
    border: 1px solid rgb(15, 14, 41);
    
}
.container p{
    font-weight: 600;
    font-size: 20px;
    margin-bottom: 15px;
}
.container input{
    width: 100%;
    height: 50px;
    border-radius: 3px;
    border: 1px solid rgb(30, 29, 29); 
    outline: none;
    margin: 10px 0 20px;
    padding: 10px;
}
.container button{
    width: 100%;
    height: 40px;
    border-radius: 5px;
    outline: none;
    border: 1px solid rgb(30, 29, 29); 
    background-color: #7ab40eab;
    font-size: 15px;
    font-weight: 600;

}
#imgBox{
    width: 200px ;
    border-radius: 5px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 2s;
}
#imgBox img{
    width: 100%;
    padding: 10px;
}
#imgBox.show-img{
    width: 100%;
    padding: 10px;
}
#imgBox.show-img{
    max-height: 400px;
    margin:10px auto;
    border: 1px solid #d1d1d1;
}